# 1.数字字母下划线组合,不允许出现除了下划线以外任意特殊符号
a = 100
a1 = 100
# 1a = 100

# 2.区分大小写
x = 100
# print(X)

# 3.不可以使用Python的关键字或内置函数
# print = 100
print("hello")

# 4.见名知意
name = "yuan"
print(name)
my_first_name = '苑'
# myFist_name = '苑'
my_second_name = '日天'
